Electric Traction For three-phase induction motors which of the following is the least efficient method of speed control? Combination of cascade and pole changing Rheostat control Pole changing Cascade control Combination of cascade and pole changing Rheostat control Pole changing Cascade control ANSWER DOWNLOAD EXAMIANS APP
Electric Traction _________ locomotive has the highest operational availability. Diesel Steam Electric All of the listed here Diesel Steam Electric All of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Coefficient of adhesion is All of the listed here Low in case of D.C. traction than in the case of AC. traction High in case of D.C. traction than in the case of AC. traction Equal in both AC. and D.C. traction All of the listed here Low in case of D.C. traction than in the case of AC. traction High in case of D.C. traction than in the case of AC. traction Equal in both AC. and D.C. traction ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to 20 15 5 10 20 15 5 10 ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The speed of a locomotive is controlled by Applying brakes Gear box Flywheel Regulating steam flow to engine Applying brakes Gear box Flywheel Regulating steam flow to engine ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction? Reduced current method All of the listed here Tap changing control of transformer Series parallel operation of motors Reduced current method All of the listed here Tap changing control of transformer Series parallel operation of motors ANSWER DOWNLOAD EXAMIANS APP
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